package com.leyou.gateway.config;

import com.leyou.gateway.po.CORSProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

import java.util.List;

@Configuration
public class GlobalCORSConfig {

    @Autowired
    private CORSProperties corsPorperties;

    @Bean
    public CorsFilter corsFilter() {
        //1.添加CORS配置信息
        CorsConfiguration config = new CorsConfiguration();
        //1) 允许的域,不要写*，否则cookie就无法使用了
        List<String> allowedOrigins = corsPorperties.getAllowedOrigins();
        for (String allowedOrigin : allowedOrigins) {
            config.addAllowedOrigin(allowedOrigin);
        }
//        config.addAllowedOrigin("http://manage.leyou.com");
//        config.addAllowedOrigin("http://manage.leyou.com");
//        config.addAllowedOrigin("http://manage.leyou.com");
//        config.addAllowedOrigin("http://manage.leyou.com");
        //2) 是否发送Cookie信息
        config.setAllowCredentials(true);
        //3) 允许的请求方式
        List<String> allowedMethods = corsPorperties.getAllowedMethods();
        for (String allowedMethod : allowedMethods) {
            config.addAllowedMethod(allowedMethod);
        }
//        config.addAllowedMethod("OPTIONS");
//        config.addAllowedMethod("HEAD");
//        config.addAllowedMethod("GET");
//        config.addAllowedMethod("PUT");
//        config.addAllowedMethod("POST");
//        config.addAllowedMethod("DELETE");
        // 4）允许的头信息
        List<String> allowedHeaders = corsPorperties.getAllowedHeaders();
        for (String allowedHeader : allowedHeaders) {
            config.addAllowedHeader(allowedHeader);
        }
//        config.addAllowedHeader("*");
        // 5）有效期
        config.setMaxAge(corsPorperties.getMaxAge());

        //2.添加映射路径，我们拦截一切请求
        UrlBasedCorsConfigurationSource configSource = new UrlBasedCorsConfigurationSource();
        configSource.registerCorsConfiguration(corsPorperties.getFilterPath(), config);
//        configSource.registerCorsConfiguration("/**", config);

        //3.返回新的CORSFilter.
        return new CorsFilter(configSource);
    }
}